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22 April 2018 : Clinical Research  

Preservation of Hearing Following Cochlear Implantation Using Different Steroid Therapy Regimens: A Prospective Clinical Study

Magdalena Beata Skarżyńska12ADEF, Piotr Henryk Skarżyński1345ABCDEF*, Bartłomiej Król13ADEF, Magdalena Kozieł13BF, Kamila Osińska13BCDEF, Elżbieta Gos13CDE, Henryk Skarżyński13ADEF

DOI: 10.12659/MSM.906210

Med Sci Monit 2018; 24: CLR2437-2445

Abstract

BACKGROUND: A prospective clinical study was conducted to assess different regimens of steroid therapy and preservation of hearing following cochlear implantation.

MATERIAL AND METHODS: Study participants were ≥18 years-of-age, with a cochlear duct length ≥27.1 mm measured by computed tomography (CT), with hearing sound levels in the range of 10–120 decibels (dB) and sound frequencies of 125–250 hertz (Hz); sound levels of 35–120 dB and frequencies of 500–1,000 Hz; sound levels of 75–120 dB and frequencies of 2,000–8,000 Hz. Study exclusion criteria included diseases with contraindications for steroid therapy or medications that increased the effects of steroids. Patients had cochlear implantation and were divided into three treatment groups: intravenous (IV) steroid therapy (standard steroid therapy): combined oral and IV steroid therapy (prolonged steroid therapy); and a control group (cochlear implantation without steroid therapy). Hearing preservation was established by pure tone audiometry based on the pre-operative and postoperative average hearing thresholds according to the formula developed by the HEARRING Network.

RESULTS: There were 36 patients included in the study. In all cases, the cochlear implant electrode was inserted via the round window approach with a straight electrode length of 28 mm. Patients with combined oral and IV steroid therapy (prolonged steroid therapy) had better results when compared with patients with intravenous (IV) steroid therapy (standard steroid therapy) and the control group.

CONCLUSIONS: Prolonged steroid therapy using combined oral and IV steroids stabilized hearing thresholds and preserved hearing in adult patients following cochlear implantation.

Keywords: Cochlear Implants, Correction of Hearing Impairment, Drug Therapy, Tissue Preservation

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Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750